ROCKWOOL Comfortbatt® is a semi-rigid stone wool batt insulation for exterior wood and steel stud applications in both new construction and renovations.

It features a unique flexible edge designed to compress as the batt is inserted then spring back, expanding the batt against the frame studs to give a complete fill. This flexibility ensures the expected R-value is achieved and maintained.

Non-combustible and fire resistant, Comfortbatt® will not develop toxic smoke or promote flame spread, even when exposed directly to a fire. It also offers water and moisture resistance and excellent sound absorbency.

Comfortbatt® is an effective way to improve a home’s energy efficiency. It is GREENGUARD Gold Certified and contributes to a healthier indoor environment.

Learn more at rockwool.com

Easy Fit

Easily cut to achieve an optimal fit around pipes, electrical wiring boxes, ductwork and between studs and joists that are less than standard width.

Comfortbatt ®

Thermal Batt Insulation

Technical Data Sheet

Batt Insulation 07210* Blanket Insulation 07 21 16**

ROCKWOOL Comfortbatt® is a mineral wool batt insulation designed for thermal resistance in wood and steel framing.

Comfortbatt ®

Thermal Batt Insulation

8024 Esquesing Line, Milton, ON L9T 6W3 Tel: 800-265-6878 • Fax: 800-991-0110 rockwool.com

Performance Test Standard

Compliance Mineral Fiber Thermal Insulation for Buildings, Type 1 Compliant ASTM C665

Reaction to FireFlame spread index = 0; Smoke developed index = 0

Determination of Non-combustibility of Building Materials - Non-combustible

ASTM E84 (UL 723)

ASTM E136

Density > 2 lbs/ft³ (>32 kg/m³) ASTM C167

Thermal Resistance

Wood Stud Steel Stud

R13 (2.29) - 3.5” thick (89 mm)

R15 (RSI 2.64) – 3.5” thick (89 mm)

R21 (3.70) - 5.5” thick (140 mm)

R23 (RSI 4.05) – 5.5” thick (140 mm)

R30 (RSI 5.28) – 7.25” thick (184 mm)

R38 (6.69) - 9.5” thick (241 mm)

R10 (RSI 1.76) – 2.5” thick (64 mm)

R15 (RSI 2.64) – 3.5” thick (89 mm)

R24 (RSI 4.23) – 6” thick (152 mm)

R30 (RSI 5.28) - 7.25” thick (184 mm)

R32 (RSI 5.64) - 8” thick (203 mm)

ASTM C518

Dimensions

Wood Stud 16” (406 mm) on center: 15.25” x 47” (387 mm x1194 mm)

Wood Stud 24” (610 mm) on center: 23” x 47” (584 mm x 1194 mm)

Steel Stud 16” (406 mm) on center: 16.25” x 48” (413 mm x 1219 mm)

Steel Stud 24” (610 mm) on center: 24.25” x 48” (616 mm x 1219 mm)

Issued 08-01-2020 Supersedes 08-23-17

NOTE: *Master Format 1995 Edition **Master Format 2004 Edition. As ROCKWOOL has no control over installation design and workmanship, accessory materials or application conditions, ROCKWOOL does not warranty the performance or results of any installation containing ROCKWOOL’s products. ROCKWOOL’s overall liability and the remedies available are limited by the general terms and conditions of sale. This warranty is in lieu of all other warranties and conditions expressed or implied, including the warranties of merchantability and fitness for a particular purpose.